Key parameters at a glance
- A radius of 18.27 Earth radii
- A mass of 200.23 Earth masses
- Surface gravity around 0.60 g
- An orbital period of 3.916 days
- Semi-major axis 0.0562 AU
- Equilibrium temperature 1,840 K (1567 °C)
- Distance from Earth 1,521.30 light-years
- Earth Similarity Index 0.050
- Travel time at Voyager 1 speed 26,828,110 years
WASP-90 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#62of 1771
top 3.4%
This planet
18.27R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | WASP-90 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 18.27 | 11.21 |
| Mass (M⊕) | 1.00 | 200.23 | 317.83 |
| Density (g/cm³) | 5.51 | 0.19 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.60 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,704.49 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 200.233 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 459730973
Gaia DR2
Gaia DR2 1737061349198867456
Gaia DR3
Gaia DR3 1737061349198867456
System
WASP-90
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.92 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0562 AU.
Transit Fingerprint
Depth
0.710 %
Duration
3.355 h
Impact parameter b
0.841
Rp / R★
0.084300
Transit midpoint (BJD)
2,456,235.5639
Photometric dip
Transit produces a flux drop of 7,100 ppm lasting ≈ 3.36 h.
Extended Orbital Architecture
Planet / star radius ratio
0.084300
Semi-major axis / stellar radius
6.119
Impact parameter (b)
0.841
RV semi-amplitude (K)
60.000 m/s
Transit mid-time (BJD)
2,456,235.5639
Angular separation (arcsec)
0.12000
Eq. Temperature
1,840K
(1567 °C)
Insolation (S⊕)
1,704.49
Earth = 1.00
Earth Similarity (ESI)
0.050
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
West et al. 2016Instrument
iKon-L CCD Camera
Publication
2016-01
Observation locale
Ground
Discovery cohort
Planets confirmed in 2016 at SuperWASP (11 shown).
Host System: WASP-90
Spectral Class
F-type yellow-white
Effective Temperature
6,430 K — hotter than the Sun (5,778 K)
Estimated Age
4.40 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.980 R☉
Stellar Mass
1.550 M☉
Metallicity [Fe/H]
0.11
Extended Stellar Properties
Surface gravity (log g)
4.033 dex
Stellar density
0.280 g/cm³
Systemic radial velocity
4.36 km/s
Rotational v·sin i
6.00 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
2.120 mas
Total Proper Motion
10.707 mas/yr
PM Right Ascension
-9.07 mas/yr
PM Declination
5.68 mas/yr
Galactic Cartesian (pc)
x = 0.708 · y = -0.695 · z = 0.123
Equatorial (J2000)
RA 315.53195° · Dec 7.05628°
Galactic ℓ, b
55.875° · -24.885°
Ecliptic λ, β
320.249° · 22.907°
HTM-20 index
-968977773
Similar Worlds
HAT-P-60 b
Gas Giant · F-type yellow-white
Radius 18.28 R⊕ · 760.7 ly
NGTS-33 b
Gas Giant · F-type yellow-white
Radius 18.38 R⊕ · 1,428.1 ly
WASP-82 b
Gas Giant · F-type yellow-white
Radius 18.16 R⊕ · 899.1 ly
WASP-187 b
Gas Giant · F-type yellow-white
Radius 18.38 R⊕ · 1,211.4 ly
HATS-31 b
Gas Giant · F-type yellow-white
Radius 18.38 R⊕ · 2,524.4 ly
K2-260 b
Gas Giant · F-type yellow-white
Radius 18.42 R⊕ · 2,165.1 ly